Microchip Technology AC164337 Data Sheet

DS70000178D-page 14

 2006-2014 Microchip Technology Inc.

Table 1-2 provides a brief description of device I/O pin-
outs for the dsPIC30F2020 and the functions that may
be multiplexed to a port pin. Multiple functions may
exist on one port pin. When multiplexing occurs, the
peripheral module’s functional requirements may force
an override of the data direction of the port pin.

AN0-AN7

I

Analog

Analog input channels.

AV

DD

P

P

Positive supply for analog module.

AV

SS

P

P

Ground reference for analog module.

CLKI
CLKO

I

O

ST/CMOS

—

External clock source input. Always associated with OSC1 pin function.
Oscillator crystal output. Connects to crystal or resonator in Crystal 
Oscillator mode. Optionally functions as CLKO in RC and EC modes. Always 
associated with OSC2 pin function.

EMUD
EMUC
EMUD1
EMUC1
EMUD2
EMUC2

I/O
I/O
I/O
I/O
I/O
I/O

ST
ST
ST
ST
ST
ST

ICD Primary Communication Channel data input/output pin.
ICD Primary Communication Channel clock input/output pin.
ICD Secondary Communication Channel data input/output pin.
ICD Secondary Communication Channel clock input/output pin.
ICD Tertiary Communication Channel data input/output pin.
ICD Tertiary Communication Channel clock input/output pin.

IC1

I

ST

Capture input. 

INT0
INT1
INT2

I
I
I

ST
ST
ST

External interrupt 0
External interrupt 1
External interrupt 2

SFLT1
SFLT2
SFLT3
PWM1L
PWM1H
PWM2L
PWM2H
PWM3L
PWM3H
PWM4L
PWM4H

I
I
I

O
O
O
O
O
O
O
O

ST
ST
ST

—
—
—
—
—
—
—
—

Shared Fault Pin 1
Shared Fault Pin 2
Shared Fault Pin 3
PWM 1 Low output 
PWM 1 High output
PWM 2 Low output
PWM 2 High output
PWM 3 Low output
PWM 3 High output
PWM 4 Low output
PWM 4 High output

MCLR

I/P

ST

Master Clear (Reset) input or programming voltage input. This pin is an 
active low Reset to the device.

OC1-OC2
OCFLTA

O

I

—

Compare outputs.
Output Compare Fault pin 

OSC1
OSC2

I

I/O

CMOS

—

Oscillator crystal input. 
Oscillator crystal output. Connects to crystal or resonator in Crystal Oscillator 
mode. Optionally functions as CLKO in FRC and EC modes.

PGD
PGC
PGD1
PGC1
PGD2
PGC2

I/O

I

I/O

I

I/O

I

ST
ST
ST
ST
ST
ST

In-Circuit Serial Programming™ data input/output pin.
In-Circuit Serial Programming clock input pin.
In-Circuit Serial Programming data input/output pin 1.
In-Circuit Serial Programming clock input pin 1.
In-Circuit Serial Programming data input/output pin 2.
In-Circuit Serial Programming clock input pin 2.

Legend: CMOS

=

CMOS compatible input or output 

Analog

=

Analog input

ST

=

Schmitt Trigger input with CMOS levels 

O

=

Output 

I

=

Input P

=

Power